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lbvjy [14]
3 years ago
10

2(2x-4)=3(2x-4) what does x =​

Mathematics
2 answers:
IgorC [24]3 years ago
6 0

Answer:

x = 2.

Step-by-step explanation:

Multiply (2x - 4) by 2 to get (4x - 8). Multiply (2x - 4) by 3 to get (6x - 12). You then get (4x - 8) = (6x - 12). Subtract 4x from both sides of the equation to get -8 = 2x - 12. Add 12 to both sides of the equation to get 4 = 2x. Divide both sides by 2. You then end up with x = 2. Hope this helps!

denis-greek [22]3 years ago
3 0

2(2x-4)=3(2x-4)

Step 1: Distribute 2 to the numbers in the parentheses on the left side. This would be: (2x - 4) only on the left side

(2 × 2x) + (2 × (-4)) = 3 (2x - 4)

4x + ( -8 ) = 3 (2x - 4)

4x -8 = 3 (2x - 4)

Step 2:  Distribute 3 to the numbers in the parentheses on the right side. This would be: (2x - 4) only on the right side

4x -8 = (3 × 2x) + (3 × (-4))

4x -8 = 6x + (-12)

4x -8 = 6x -12

Step 3: Combine like terms

x's go with x's by subtracting 4x to both sides

(4x - 4x) -8 = (6x - 4x) -12

-8 = (6x - 4x) -12

-8 = 2x -12

normal numbers ( -8 and -12) need to be combined. Do this by adding 12 to both sides

(-8 + 12) = 2x + (-12 + 12)

4 = 2x

Step 4: Isolate x by dividing 2 to both sides

\frac{4}{2} =\frac{2x}{2}

2 = x

x = 2

Hope this helped!

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Using the number line above, select the number that would be the opposite of Point T.
iris [78.8K]

Answer:-9

Step-by-step explanation:

7 0
3 years ago
(i) Write the expansion of (x + y)² and (x - y)². (ii) Find (x + y)² - (x - y)² (iii) Write 12 as the difference of two perfect
zaharov [31]

Answer:

1a (x + y)² = x² + 2xy + y²

1b. (x - y)² = x² - 2xy + y²

2. (x + y)² - (x - y)² = 4xy

3. 4² – 2² = 12

Step-by-step explanation:

1a. Expansion of (x + y)²

(x + y)² = (x + y)(x + y)

(x + y)² = x(x + y) + y(x + y)

(x + y)² = x² + xy + xy + y²

(x + y)² = x² + 2xy + y²

1b. Expansion of (x - y)²

(x - y)² = (x - y)(x - y)

(x - y)² = x(x - y) - y(x - y)

(x - y)² = x² - xy - xy + y²

(x - y)² = x² - 2xy + y²

2. Determination of (x + y)² - (x - y)²

This can be obtained as follow

(x + y)² = x² + 2xy + y²

(x - y)² = x² - 2xy + y²

(x + y)² - (x - y)² = x² + 2xy + y² - (x² - 2xy + y²)

= x² + 2xy + y² - x² + 2xy - y²

= x² - x² + 2xy + 2xy + y² - y²

= 2xy + 2xy

= 4xy

(x + y)² - (x - y)² = 4xy

3. Writing 12 as the difference of two perfect square.

To do this, we shall subtract 12 from a perfect square to obtain a number which has a perfect square root.

We'll begin by 4

4² – 12

16 – 12 = 4

Find the square root of 4

√4 = 2

4 has a square root of 2.

Thus,

4² – 12 = 4

4² – 12 = 2²

Rearrange

4² – 2² = 12

Therefore, 12 as a difference of two perfect square is 4² – 2²

7 0
3 years ago
Can someone help me on these
grandymaker [24]

Answer:

Almost every question you ask can and will be answered if asked in a right why

6 0
3 years ago
Original price 65.00; Markdown: 12%
Murrr4er [49]
Muliply 65 and 0.12 and get 7.8

Subtract 65-7.8 to get marked down price

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6 0
3 years ago
The driver of the bus filled the gas tank with gas by putting in 21 gallon. If the gas gauge was at five-eighths before she fill
vazorg [7]

Answer:

56 gallons

Step-by-step explanation:

When her gas tank is full, she has x gallons in the tank.

when she went to the gas station, she had (5/8) of x gallons of gas in her tank. she added 21 gallons into her tank, then she had x gallons in her tank.

(5/8)x + 21 = x

subtract x and 21 from both sides

(5/8)x - x = -21

factor out an x from the left side

x(5/8 - 1) = -21

simplify the parenthesis

x(-3/8) = -21

multiply both sides by -8/3

x= 56 gallons

8 0
3 years ago
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